Table of Contents Barron's Essential 5 Introduction Diagnostic Examination Answer Key Answers Explained AP Score for the Diagnostic Exam Study Guide for the Diagnostic Test Multiple-Choice Questions Theme One: Exploratory Analysis Graphical Displays Summarizing Distributions Exploring Bivariate Data Exploring Categorical Data: Frequency Tables Theme Two: Collecting and Producing Data Planning and Conducting Surveys Planning and Conducting Experiments Theme Three: Probability Probability as Relative Frequency Combining and Transforming Random Variables The Normal Distribution Sampling Distributions Theme Four: Statistical Inference Confidence Intervals Tests of Significance--Proportions and Means Tests of Significance--Chi-square and Slope of Least Squares Line Theme Five: More Practice And Review The Investigative Task Statistical Insights into Social Issues Practice Examinations Appendix Checking Assumptions for Inference 35 AP Exam Hints AP Scoring Guide Basic Uses of the TI-83/TI-84 Basic Uses of the Casio Prizm Basic Uses of the HP Prime Basic Uses of the TI-Nspire Formulas Inferential Statistics Graphical Displays Table A: Standard Normal Probabilities Table B: t -distribution Critical Values Table C: x 2 Critical Values Table D: Random Number Table Index.